53211215 has 16 divisors (see below), whose sum is σ = 66022560. Its totient is φ = 41147520.

The previous prime is 53211203. The next prime is 53211227. The reversal of 53211215 is 51211235.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (53211203) and next prime (53211227).

It is not a de Polignac number, because 53211215 - 2¹⁴ = 53194831 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16517 + ... + 19473.

It is an arithmetic number, because the mean of its divisors is an integer number (4126410).

Almost surely, 2^53211215 is an apocalyptic number.

53211215 is a deficient number, since it is larger than the sum of its proper divisors (12811345).

53211215 is a wasteful number, since it uses less digits than its factorization.

53211215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3082.

The product of its digits is 300, while the sum is 20.

The square root of 53211215 is about 7294.6017711730. The cubic root of 53211215 is about 376.1268976200.

Adding to 53211215 its sum of digits (20), we get a palindrome (53211235).

The spelling of 53211215 in words is "fifty-three million, two hundred eleven thousand, two hundred fifteen".